Biology For General Secondary Certificate - Two Terms - Chapter One : Nutrition
I. Complete the following sentences with suitable words:
1- In photosynthesis .............. is the limiting factor of the Dark reactions.

- Temperature



2- Salivary amylase catalyzes the hydrolysis of ................ into............ in ................. Medium

- Starch - dissacharide maltose - Alkaline



3- Cellulose walls are ................. but plasma membranes are ................

- Permeable - Semi-permeable.



4- A part of the energy stored in the excited chlorophyll is used in ............. and another part is stored in the form of ................…

- Splitting water molecules - ATP



5- The mesophyll in plant leaves is composed of ................. and ..................... tissues.

- Palisade - spongy tissue.



6-

- (1) Maltase (2) (3) glucose



14-

- (1) Sucrase (2) (3) Fructose



15-

- (1) Lactase (2) (3) glucose



16-

- Amino acids



17-

- Enterokinase



18-




II. Write the scientific term that is expressed by each of the following sentences:-
1- A series of rhythmic contractions and relaxations of circular muscles which extend along the alimentary canal

- Peristalsis



2- A process through which the digested food is transfered from the digestive system to the blood and lymph.

- Absorption



3- Diffusion of water molecules from a diluted medium of high water concentration to another of lower water concentration.

- Osmosis.



4- A muscular valve that passes food to the stomach and prevents its returning to the Oesophagus.

- Cardiac sphincter.



5- A digestive enzyme that changes fats into fatty acids and glycerols.

- Lipase.



6- The ability of colloidal substances to absorb water.

- imbibition.



7- Disc shaped granules extend in piles inside the chloroplasts.

- grana.



8- A medical case resulted from partial digestion of the stomach wall.

- Peptic ulcer.



9- Breaking down polymers into monomers with the help of hydrolysis and enzymes.

- Digestion.